Convert

Metres per second to Kilometres per hour

Exact answer: 1 m/s = 3.6 km/h (defined factor)

Knots are nautical miles per hour. mph and knots are not interchangeable imperial speeds.

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What do you want to convert?

From1 m/s

Result3.6 km/h

Factor1 m/s = 3.6 km/h

Source basisBIPM SI Brochure · NIST Guide to SI Appendix B

Examples

011 m/s = 3.6 km/h

Example value from the reference table. Internal calculation uses stored factors; display output is rounded.

02Common mistake

Knots are nautical miles per hour. mph and knots are not interchangeable imperial speeds.

03Base unit: m/s

1 m/s = 3.6 km/h. Metres per second is the base unit of the family, so the value is converted directly.

Table

Metres per second	Kilometres per hour
1	3.6
5	18
10	36
20	72

Formula

1 m/s = 3.6 km/h. Metres per second is the base unit of the family, so the value is converted directly.

Sources

BIPM SI BrochureSI base units, prefixes and official SI context.NIST Guide to SI Appendix BNIST conversion-factor method and non-SI factors.

Related conversions

Knot to Kilometres per hourkn → km/hSpeed Kilometres per hour to Knotkm/h → knSpeed Miles per hour to Kilometres per hourmph → km/hSpeed Kilometres per hour to Miles per hourkm/h → mphSpeed

Search and practice paths

FormulaTableExamplesCommon mistakeEveryday/engineeringExcel/CSVBatch converterPrint view

Factor origin

Factors come from the stored source family and are not derived from rounded display values.

Rounding rule

UnitCloud keeps calculating with stored factors and rounds only the displayed output by selected precision.

When not to use

Do not use as the sole basis for official, medical, safety-critical or contractual decisions.

Citation

Citation note: UnitCloud, conversion with formula, sources re-checked as of August 2026. Speed. Source basis: BIPM SI Brochure · NIST Guide to SI Appendix B.

Common questions

What is the factor for Metres per second to Kilometres per hour?

1 m/s = 3.6 km/h

Which formula does Metres per second to Kilometres per hour use?

1 m/s = 3.6 km/h. Metres per second is the base unit of the family, so the value is converted directly.

When should I verify the result?

Do not use as the sole basis for official, medical, safety-critical or contractual decisions.